package com.agstar.demo;

import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.List;
import java.util.TreeMap;
import java.util.TreeSet;

/**
 * @author agstar
 * @date 2020/4/25 17:45
 */
public class Test {
    public static void main(String[] args) throws InterruptedException {
        System.out.println("hello world");
//        Thread.sleep(Integer.MAX_VALUE);
        List<String> ss = new ArrayList<>();
        for (String s : ss) {
            System.out.println(s);
        }
        ArrayList<String> objects = new ArrayList<>();
        objects.add("");
        ThreadLocal<List<String>> threadLocal = new ThreadLocal<>();
        threadLocal.set(ss);
        TreeMap treeMap = new TreeMap<>();
        TreeSet treeSet = new TreeSet<>();
    }
}
